| 1 | |
| 2 | #include <linux/termios_internal.h>
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| 3 |
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| 4 | |
| 5 | * c_cc characters in the termio structure. Oh, how I love being
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| 6 | * backwardly compatible. Notice that character 4 and 5 are
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| 7 | * interpreted differently depending on whether ICANON is set in
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| 8 | * c_lflag. If it's set, they are used as _VEOF and _VEOL, otherwise
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| 9 | * as _VMIN and V_TIME. This is for compatibility with OSF/1 (which
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| 10 | * is compatible with sysV)...
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| 11 |
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| 12 | #define _VMIN 4
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| 13 | #define _VTIME 5
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| 14 |
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| 15 | int kernel_termios_to_user_termio(struct termio __user *termio,
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| 16 | struct ktermios *termios)
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| 17 | {
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| 18 | struct termio v;
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| 19 | memset(&v, 0, sizeof(struct termio));
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| 20 | v.c_iflag = termios->c_iflag;
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| 21 | v.c_oflag = termios->c_oflag;
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| 22 | v.c_cflag = termios->c_cflag;
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| 23 | v.c_lflag = termios->c_lflag;
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| 24 | v.c_line = termios->c_line;
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| 25 | memcpy(v.c_cc, termios->c_cc, NCC);
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| 26 | if (!(v.c_lflag & ICANON)) {
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| 27 | v.c_cc[_VMIN] = termios->c_cc[VMIN];
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| 28 | v.c_cc[_VTIME] = termios->c_cc[VTIME];
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| 29 | }
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| 30 | return copy_to_user(termio, &v, sizeof(struct termio));
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| 31 | }
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| 32 |
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| 33 | int user_termios_to_kernel_termios(struct ktermios *k,
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| 34 | struct termios2 __user *u)
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| 35 | {
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| 36 | int err;
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| 37 | err = get_user(k->c_iflag, &u->c_iflag);
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| 38 | err |= get_user(k->c_oflag, &u->c_oflag);
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| 39 | err |= get_user(k->c_cflag, &u->c_cflag);
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| 40 | err |= get_user(k->c_lflag, &u->c_lflag);
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| 41 | err |= get_user(k->c_line, &u->c_line);
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| 42 | err |= copy_from_user(k->c_cc, u->c_cc, NCCS);
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| 43 | if (k->c_lflag & ICANON) {
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| 44 | err |= get_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
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| 45 | err |= get_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
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| 46 | } else {
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| 47 | err |= get_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
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| 48 | err |= get_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
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| 49 | }
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| 50 | err |= get_user(k->c_ispeed, &u->c_ispeed);
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| 51 | err |= get_user(k->c_ospeed, &u->c_ospeed);
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| 52 | return err;
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| 53 | }
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| 54 |
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| 55 | int kernel_termios_to_user_termios(struct termios2 __user *u,
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| 56 | struct ktermios *k)
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| 57 | {
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| 58 | int err;
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| 59 | err = put_user(k->c_iflag, &u->c_iflag);
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| 60 | err |= put_user(k->c_oflag, &u->c_oflag);
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| 61 | err |= put_user(k->c_cflag, &u->c_cflag);
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| 62 | err |= put_user(k->c_lflag, &u->c_lflag);
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| 63 | err |= put_user(k->c_line, &u->c_line);
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| 64 | err |= copy_to_user(u->c_cc, k->c_cc, NCCS);
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| 65 | if (!(k->c_lflag & ICANON)) {
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| 66 | err |= put_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
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| 67 | err |= put_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
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| 68 | } else {
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| 69 | err |= put_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
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| 70 | err |= put_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
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| 71 | }
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| 72 | err |= put_user(k->c_ispeed, &u->c_ispeed);
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| 73 | err |= put_user(k->c_ospeed, &u->c_ospeed);
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| 74 | return err;
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| 75 | }
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| 76 |
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| 77 | int user_termios_to_kernel_termios_1(struct ktermios *k,
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| 78 | struct termios __user *u)
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| 79 | {
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| 80 | int err;
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| 81 | err = get_user(k->c_iflag, &u->c_iflag);
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| 82 | err |= get_user(k->c_oflag, &u->c_oflag);
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| 83 | err |= get_user(k->c_cflag, &u->c_cflag);
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| 84 | err |= get_user(k->c_lflag, &u->c_lflag);
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| 85 | err |= get_user(k->c_line, &u->c_line);
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| 86 | err |= copy_from_user(k->c_cc, u->c_cc, NCCS);
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| 87 | if (k->c_lflag & ICANON) {
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| 88 | err |= get_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
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| 89 | err |= get_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
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| 90 | } else {
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| 91 | err |= get_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
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| 92 | err |= get_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
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| 93 | }
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| 94 | return err;
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| 95 | }
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| 96 |
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| 97 | int kernel_termios_to_user_termios_1(struct termios __user *u,
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| 98 | struct ktermios *k)
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| 99 | {
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| 100 | int err;
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| 101 | err = put_user(k->c_iflag, &u->c_iflag);
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| 102 | err |= put_user(k->c_oflag, &u->c_oflag);
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| 103 | err |= put_user(k->c_cflag, &u->c_cflag);
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| 104 | err |= put_user(k->c_lflag, &u->c_lflag);
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| 105 | err |= put_user(k->c_line, &u->c_line);
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| 106 | err |= copy_to_user(u->c_cc, k->c_cc, NCCS);
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| 107 | if (!(k->c_lflag & ICANON)) {
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| 108 | err |= put_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
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| 109 | err |= put_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
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| 110 | } else {
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| 111 | err |= put_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
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| 112 | err |= put_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
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| 113 | }
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| 114 | return err;
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| 115 | }
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